Discussions By Condition: I cannot get a diagnosis.

Upper Arm/Shoulder Trauma

Hiya, I really hope someone can help!I can't see my doctor as I'm registered at my uni practise, which is miles away (I''m at home for the hols at the moment). So, 2 weeks ago I fell off a horse from a great height at a great speed, and it was a bit of a crashing fall. I fell directly onto my right shoulder and it was in agony, though I managed to get back on and ride for a few more minutes. The pain took many hours to decrease even though I rested it. Ever since, I have not been able to lean on it or raise it more than a foot from my side in any direction. However I can move my lower arm and shoulder normally, so the pain/injury seems to be in my upper arm. I thought it would go away, but after 3 days I went to A&E as I had lightly bumped the arm and the instant and extreme pain and shock that it caused made me cry (I'm a pretty stoical character). I also had occasional tingling in my hand, but when I touched the skin it didn't hurt, so it occurred to me that it could be fractured as opposed to just bruised. there was no colour change (i.e. bruising) or swelling of any kind. Anyway, so I went to A&E and was told it could be a fracture, but an x-ray showed no such i injury. I was given a sling and told it was just badly bruised (even though it doesn't feel bruised). 2 weeks later, I still find riding, driving an daily activities such as lifting and reaching difficult. Every now and again something jars my arm (usually when driving or riding, both of which I was told I could continue with) which is agonisingly painful. So, after exactly 2 weeks I lifted my arms up from my sides in front of a mirror (my right arm being very limited in its movement ability) and noticed a large, round, boney lump on my right shoulder (which I thought was undamaged) which is hard and unpainful to the touch. My shoulders look wonky and I don't know how I hadn't noticed before as they looked apparently fine 3 days after the fall. Does anyone have any idea what it could be??